I purchased this dovetail training wheel set long ago and it served me well. I still cut them by hand but have updated my method. There is one set (6:1) of BCT blocks and another set (8:1) that I made, included in the price. The original manual also is in good enough shape to be included. I modified all the blocks by countersinking small rare earth magnets into the business end of each block to make for more sure guidance of the sawblade, kinda like cruise control. This tool originally sold for over $100...

My asking price for this lightly used version is $80 (shipping to domestic US address is included).